Determination of g sub R / g sub L in left-right symmetric models at hadron colliders

Journal Article · Mon May 11 04:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.2871· OSTI ID:7183752

Cvetic, M; Langacker, P ^[1]; Kayser, B ^[2]

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1. Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396 (United States)
2. Division of Physics, National Science Foundation, Washington, D.C. 20550 (United States)

Recently proposed rare decays {ital Z}{prime}{r arrow}{ital f}{sub 1}{ital {bar f}2}{ital V} (with {ital V}={ital W} or {ital Z} and {ital f}{sub 1,2} ordinary fermions) and the forward-backward asymmetry are found to be sensitive diagnostic tests for the gauge coupling ratio {ital g}{sub {ital R}}/{ital g}{sub {ital L}} in left-right symmetric models (SU{sub 2{ital L}}{times}SU{sub 2{ital R}}{times}U{sub 1({ital B}{minus}{ital L})}). At projected luminosities of the CERN Large Hadron Collider and the Superconducting Super Collider, {ital g}{sub {ital R}}/{ital g}{sub {ital L}} can be determined statistically to {similar to}1% for {ital M}{sub {ital Z}{prime}}{congruent}1 TeV. The absence of related decays {ital W}{prime}{sup {plus minus}}{r arrow}{ital f}{sub 1}{ital {bar f}2}{ital W}{sup {plus minus}} would be a clean signature that {ital W}{prime} couples to right-handed currents. Once {ital g}{sub {ital R}}/{ital g}{sub {ital L}} is determined, the ratio {ital M}{sub {ital Z}{prime}}/{ital M}{sub {ital W}{prime}} and the decays {ital Z}{prime}{r arrow}{ital W}{sup +}{ital W{minus}} ({ital W}{prime}{sup {plus minus}}{r arrow}{ital W}{sup {plus minus}}{ital Z}) provide probes for the symmetry breaking sector.

• DOE Contract Number: AC02-76ER03071
• OSTI ID: 7183752
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:19; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

662210 -- Specific Theories & Interaction Models
662340* -- Hadron Interactions-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHIRAL SYMMETRY
COUPLING CONSTANTS
CROSS SECTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HIGGS BOSONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTONS
MASS
PARAMETRIC ANALYSIS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SYMMETRY
SYMMETRY BREAKING